import java.util.Scanner;

public class Test05 {
    public static void main(String[] args) {
        //根据水温输出结果
        Scanner a1 = new Scanner(System.in);
        System.out.println("请输入水温：");
        int a2 = a1.nextInt();

        if (a2 > 95 ){
            System.out.println(" " + "开水");
        }else if (a2 > 75 && a2 <= 95){
            System.out.println(" " + "热水");
        }else if (a2 > 40 && a2 <= 70){
            System.out.println(" " + "温水");
        }else if (a2 <= 40){
            System.out.println(" " + "凉水");
        }
    }
}